Function children

children(element, selector): NodeListOf<Element>
A utility function that retrieves all direct children of a given HTML element that match a specified CSS selector.

It is a replacement for the jQuery children() method, providing similar functionality without the need for jQuery.
Parameters
- element: HTMLElement
  
  The parent HTML element from which to retrieve child elements.
- selector: string
  
  A string containing one or more CSS selectors separated by commas. This string is used to filter the children of the element parameter.
Returns NodeListOf<Element>
A NodeList of elements that are direct children of the element parameter and match the provided CSS selector(s). If no matching elements are found, the function returns an empty NodeList.
Example
```
// Get an element by its GUID
const parentElement = ix.api.dom.getHtml("<ELEMENT-GUID>");

// Get all direct "div" children of the element with id "parent"
const divChildren = ix.api.dom.children(parentElement, "div");
```